In Guard Fedor is the most dangerous man on the planet. However standing Fedor is not even close to as explosive as Arlovski.
Very true. Fedor can throw some leather, as seen in the Goodridge, Zulu, and Cro Cop fights, along with others. But he's not on AA's level standing.
Also, Fedor has broken his hand several times and doesn't rely on striking very much because of it.